Ontologia

Commune · FRA

Arras

France

CfbTemperate, no dry season, warm summer(100 %)

Species observed

1 442

Observations

17 655

Area

12km²

Ecological tissue

Sample of 35 species (selected proportionally per kingdom among those with at least one documented interaction here) to keep the graph readable. Hover for details, click to explore the full ecosystem of a species.

ℹ️ The territory contains many more species than displayed and all their documented interactions: the graph is intentionally the structural skeleton (top-N species by composite local score, edges filtered by Serrano 2009 disparity filter α=0.2).

RègnesAnimalPlanteChampignonBacterie
RelationsPredationParasitismeSymbiosePollinisation
StatutEn dangerVulnérableProtégéeEndémique

Indicateurs du tissu écologique

Tissu écologique de Arras : 24 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 109 interactions GloBI sur 6 types (connectance 17.3%, filtre Serrano α=0.2). 12 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
36
Interactions affichées
109
Connectance
0.173
Patrimoniales
1
Plus dense que (national)0 %(top 100%)

Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).

Species present

1 442 distinct species · 17 655 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

17 655 obs · 1 cellules
Obs. / cellule
≥ 17 655
17 655–17 654
17 655–17 654
17 655–17 654
< 17 655

Source : GBIF — observations agrégées par hexagones 0.027° × 0.027° (~22km), filtre précision coordonnée < 10 km. Fond carte : OpenFreeMap · © OpenStreetMap.

Climate

Mean T°

10,4°C

Annual rain

771mm

Warmest m°

22,0°C

Coldest m°

0,8°C

Elevation: 74 m on average (min 64 m, max 90 m)

Bioclimatic detailsExpert
Annual mean temp.
10,4°C
Annual rain
771mm
Warmest month
22,0°C
Coldest month
0,8°C
Mean alt.
74m
Min
64m
Max
90m
Std. dev.
8m
Köppen-Geiger (dominant)
CfbTemperate, no dry season, warm summer(100 %)Temperate

CHELSA BIO 1-19 v2.1 · ETOPO DEM 60s · Köppen-Geiger 1991-2020 (Beck et al. 2018)

Soil & lithology

pH H₂O

7,3

Org. C

19,5g/kg

Clay

24,1%

Sand

10,8%

Silt

65,1%

Average over 0-30 cm. Per-depth details in expert panel.

Dominant lithology: smGLiMaggregated to Pas-de-Calais

3 soil depths detailedExpert
0–5 cm
pH H₂O
7,1
Org. C
29,1g/kg
Clay
22,8%
Sand
10,6%
Silt
66,6%
5–15 cm
pH H₂O
7,4
Org. C
16,6g/kg
Clay
24,2%
Sand
9,7%
Silt
65,9%
15–30 cm
pH H₂O
7,3
Org. C
12,8g/kg
Clay
25,4%
Sand
11,9%
Silt
62,7%

SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)

Land cover

Forest4.3%
Crops7.0%
Built-up13.0%
Bare soil0.2%
Other (grassland, water…)75.6%

Copernicus Global Land Cover 100m (Buchhorn et al. 2020)

Hydrology1 basins · 0 lakes · 5 rivers

Hydrology metrics for this exact territory

Stream length here

4,4km

Basins crossed

1

Max stream order

4

Max drainage

530km²

Discharge in basins

0,2m³/s

Mean precip.

678mm/an

Mean T°

9,8°C

Moisture idx

-0,06

Max snow

6%

Mean runoff

465mm/an

Mean elev. (basins)

105m

Watersheds crossing here

Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10

Human pressure

Pop. density

18hab/km²

Night light

33,0nW

Built-up

1 298,6%

Pesticides

47,0kg/km²

GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)

France-specific data (Phase 2)

ZNIEFF, Natura 2000, INPN protected spaces, BNV-D pesticides, Naïades water quality, SAFRAN fine climate, BRGM lithology — Layer FR to load in Phase 2.